摘要：OBJECTIVE: The aim of the present study was to evaluate the long-term results of face mask when growth potential of the patients were close to cease or ceased. MATERIALS AND METHOD: The material consisted of pre-treatment (T1), post treatment (T2), and long-term (T3) lateral cephalograms and hand-wrist radiographs of 17 patients (9 female, 8 male; mean age: 11.1 years) with skeletal Class III malocclusion characterized by maxillary deficiency or maxillary deficiency and mandibular prognatism with anterior crossbite or tet-a-tet incisor and/or Class III molar relationship and treated with Delaire type face mask. Subjects whose growth potentials were close to cease or ceased at the T3 period were selected for the study. The mean follow-up period (T3-T2) was 4.7 years. RESULTS: Significant increases in SNA angle and A┴VertT distance were observed during face mask therapy (T2-T1) and at overall period (T3-T1; p<0.001, p<0.01, respectively). SNB angle and B┴Vert T distance increased only during the follow-up period (T3-T2; p<0.001, p<0.01, respectively). For the ANB angle, significant increases were found during face mask therapy and at overall period (p<0.001, p<0.01, respectively); however, a significant decrease was found during the follow-up period (p<0.01). CONCLUSION: After face mask therapy, relapse may occur during follow-up due to re-occurrence of the original growth pattern. These findings suggest the necessity of follow-up after treatment in patients with Yassıla III malocclusion during growth and development.
关键词：Long-Term Effects;Malocclusion, Angle Class III;Orthodontics;Malokluzyon, Angle Sınıf III;Uzun Dönem Etkiler;Ortodonti
